18419540

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{2609}}^1$

素因数の和:2971

約数の個数: 24

約数和(自身を含む): 38805480

約数和(自身を除く): 20385940

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 2609, 3530, 5218, 7060, 10436, 13045, 26090, 52180, 920977, 1841954, 3683908, 4604885, 9209770, 18419540]

約数ペア:

[(1, 18419540), (2, 9209770), (4, 4604885), (5, 3683908), (10, 1841954), (20, 920977), (353, 52180), (706, 26090), (1412, 13045), (1765, 10436), (2609, 7060), (3530, 5218)]